350 EXPERIMENT STATION RECORD. [Vol. 43 



ment to prevent reinfection or spreading. A private crematory for dead ma- 

 terials is described. 



Walnut diseases, C. Camacho {Enfermedadcs del Nogal. Santiago, Chile: 

 Sen\ Pol. Sanit. Vejetal, 1917, pp. 13, flffn. 4)- — Diseases of walmit here dealt 

 witli include bacteriosis {Pseudomonas jnylmuUs) , which may appear on any 

 of the tender parts, as the annual branches, petioles, or yonng nuts; also mel- 

 axuma (DothiorelUi (jrcgarid). Control measures are outlined. 



Diseases of Hevea brasiliensis in Uganda, AV. Small {Ugandn Dept. Agr. 

 Circ. 3 (1920), pp. 12). — This pul)lication, the first of a new series, treats of dis- 

 eases of the Para rubber tree in Uganda so far as investigated to date. Symp- 

 toms of the diseases and recommendations for their treatment are given. 

 The diseases are treated systematically as related to the root, stem, pod, and 

 leaf of H. hraslUensis. 



Hcfw to distinguish and combat the white pine blister rust, J. F. Martin, 

 A. E. Stp:ne, and R. A. Sheals {R. I. Bd. Agr., Ent. Dept. Bui., n. sef., No. 1 

 {1920), pp. 38, figs. 30). — This account, written from a practical standpoint, 

 deals with this disease as regards its identification and prevention and with 

 insect injuries sometimes mistaken for white pine blister rust. 



Insect and fungus pests of basket willows {Bd. Agr. and Fisheries [Lon^ 

 don], Leaflet 301 {1918), pp. 11, pis. 4)- — A portion of this leaflet, devoted to 

 fungus diseases, deals with willow rust and rust canker {Melampsora sp.) and 

 willow canker {Botryosphceria gregaria), with measures for their control. 



Dry rot in timber, A. D. Webster {Gard. Chron., 3. ser., 66 {1919), No. 1697, 

 p. 5). — Noting the statement that half the wastage of timber in English coal 

 mines is due to attacks by fungi, notably the so-called dry rot fungus MeruUus 

 laerymans, the author details briefly attacks observed by himself. The pro- 

 tective measures suggested consist chiefly in the use of only dry, well-seasoned 

 timber, exposure to sunlight, ventilation where possible, avoidance of the 

 introduction of unsafe woods, and painting with carbolineum on the first 

 indication of disease. 



Investigations on the Narcissus disease, J. K. Ramsbottom {Jour. Roy. 

 Hort. Soc, 43 {1918), No. 1, pp. 51-64, pls. 12). — This is a more detailed account 

 of work by the author on the Narcissus disease {Tylenchus devastatri.r) than 

 was given in the reports previously noted (E. S. R., 38, p. 4.5.5; 43, p. 49). 



Nematodes {Sacramento, Cal.: State Dept. Agr., Off. Pest Control, 1920, pp. 3, 

 figs. 2). — Statements are quoted regarding nematode injury to orchards through 

 nursery stock and to potato crops through seed potatoes, also regarding the 

 control of nematodes by selection of clean planting material. 



The eelworm or nematode, a destructive plant pest {Sacramento, Cal.: 

 State Dept. Agr,, Off- Pest Control, 1920, pp. 4, figs. £).— This pamphlet adds \o 

 the suggestions contained in that above noted a brief general account of the 

 parasitism of Heterodera radicicola. 



ECONOMIC ZOOLOGY— ENTOMOLOGY. 



Annual report of the Governor of Alaska on tlie Alaska Game LaAV, 



1919 ( U. S. Dept. Agr., Dept. Circ. 88 {1919), pp. iS).— This is the usual annual 

 report on the administration of the Alaska game law. It includes estimates of 

 game, including bears, caribou, moose, Arctic sheep, deer, goats, ptarmigan and 

 grouse, migratory birds, and walrus; also, the fur-bearing and other animals, 

 not classed as game animals, including wolves and coyotes, reindet-r, and the 

 musk-ox. 



Tlie cost of a squirrel and squirrel control, W. T. Shaw {Washington Sta. 

 Pop. Bui. 118 {1920), pp. 19, figs. 11). — In determining the damage to winter 



